OpenGL

Kimmo Leppälä

Optimizing Real-Time 3D for Entry Level Hardware

Published Tuesday April 2nd, 2019 | 2 Comments on Optimizing Real-Time 3D for Entry Level Hardware
Posted in Automotive, Biz Circuit & Dev Loop, Customers, Design, Graphics, OpenGL, Qt, Qt 3D, Qt 3D Studio, Qt Quick, Qt Quick 2 | Tags:

When more and more cars are being equipped with digital instrument clusters, it is very important to consider the cost of the electronics needed to achieve the desired user experience. In volume products, it matters a lot whether the cost of a hardware component is 10, 50 or 100 USD – so it really pays […]

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Eskil Abrahamsen Blomfeldt

Introducing the Distance Field Generator

Published Wednesday October 10th, 2018 | 18 Comments on Introducing the Distance Field Generator
Posted in Dev Loop, Graphics, OpenGL, Performance, Qt Quick 2, Text and font handling

At least from the perspective of rendering, text is often the most complex part of a traditional two-dimensional user interface. In such an interface, the two main components are rectangular images and text. The rectangular images are often quite static, and can be represented by two triangles and four indexes into a texture atlas that […]

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Laszlo Agocs

What’s in a Qt 3D Studio Scene?

Published Wednesday June 27th, 2018 | Comments Off on What’s in a Qt 3D Studio Scene?
Posted in Dev Loop, Graphics, OpenGL, Qt 3D, Qt 3D Studio

Now that Qt 3D Studio 2.0 has been released, let’s look at what some of the new features enable. In particular, we will visit the so-called in-scene debug and profile views, as these handy, built-in (both to the viewer launched from the editor and, if the developer decides so, to applications) views allow answering questions […]

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Eirik Aavitsland

Compressed Textures in Qt 5.11

Published Monday May 7th, 2018 | 8 Comments on Compressed Textures in Qt 5.11
Posted in Embedded, OpenGL, Qt Quick, Qt Quick 2, Uncategorized | Tags: ,

As modern user interfaces become ever more graphics intensive, the demands on graphics memory to hold the textures increase. This is particularly relevant for embedded systems, where resources come at a higher premium, and can be a challenge for system performance. One of the key remedies for this is to reduce the memory requirements of the […]

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Svenn-Arne Dragly

Memory usage improvements in Qt3D

Published Tuesday February 13th, 2018 | Comments Off on Memory usage improvements in Qt3D
Posted in OpenGL, Performance, Qt 3D

Together with engineers from KDAB and the Qt community, we are continuing to improve performance and stability of Qt3D. Back in November, I wrote about how we have reduced CPU usage in Qt3D. In this post I would like to share some improvements we have made to reduce memory consumption. Qt 3D has a flexible […]

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Laszlo Agocs

Towards an Improved Qt 3D Studio Runtime

Published Monday December 11th, 2017 | 10 Comments on Towards an Improved Qt 3D Studio Runtime
Posted in Declarative UI, Embedded, Graphics, OpenGL, Qt 3D, Qt 3D Studio, Roadmap

Now that Qt 3D Studio 1.0 has been released, it is time to have a sneak peek at some of the upcoming developments. As outlined in the release announcement, there is work on-going to move the runtime, meaning the engine that renders and runs the scenes, on top of Qt 3D. Let’s take a closer […]

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Svenn-Arne Dragly

Increasing the number of lights in Qt 3D

Published Tuesday December 5th, 2017 | Comments Off on Increasing the number of lights in Qt 3D
Posted in Dev Loop, Graphics, OpenGL, Qt 3D

While it is possible to draw scenes with almost unlimited numbers of lights using deferred rendering in Qt 3D, the default materials in Qt 3D Extras have been limited to eight lights because they are tied to forward rendering. Although we apply a few tricks that allow you to define more than eight lights in […]

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Stefan Larndorfer

QML vs. HTML5

Published Friday July 28th, 2017 | 16 Comments on QML vs. HTML5
Posted in Automotive, Biz Circuit & Dev Loop, C++, cross-platform, Declarative UI, Design, effectiveness, efficiency, Embedded, Embedded World, framework, Guest Blog, HTML vs Qt, Internet of Things, OpenGL, Performance, QML 을 시작합시다., Qt, Qt Quick, Qt Quick 2, Qt Quick 2.0, Qt Quick Controls, UI

Guest post by Stefan Larndorfer at sequality Mobile devices have set the standard in terms of responsiveness and user-friendliness for HMIs across industries. Manufacturers of cars, medical equipment, industrial automation systems and consumer electronics now want to replicate this great user experience for their embedded devices. To find out which technology strategy we should select we […]

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Laszlo Agocs

Let There Be Shapes!

Published Friday July 7th, 2017 | 11 Comments on Let There Be Shapes!
Posted in Declarative UI, Dev Loop, Graphics, OpenGL, Painting, Qt Quick, UI

One of the new features of the upcoming Qt 5.10 is the introduction of the shapes plugin to Qt Quick. This allows adding stroked and filled paths composed of lines, quadratic curves, cubic curves, and arcs into Qt Quick scenes. While this has always been possible to achieve via QQuickPaintedItem or the Canvas type, the […]

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